英语翻译Topazisahard,transparentmineral.Itisacompoundofaluminum,silica,andfluorine.Gemtopazisvaluable.Jewelerscallthisvarietyofthestone"precioustopaz".Thebest-knownprecioustopazgemsrangeincolorfromrichyellowtoligh

Question

英语翻译
Topaz is a hard,transparent mineral.It is a compound of aluminum,silica,and fluorine.Gem topaz is valuable.Jewelers call this variety of the stone "precious topaz".The best-known precious topaz gems range in color from rich yellow to light brown or pinkish red.Topaz is one of the hardest gem minerals.In the mineral table of hardness,it has a rating of 8,which means that a knife cannot cut it,and that topaz will scratch quartz.The golden variety of precious topaz is quite uncommon.Most of the world's topaz is white or blue.The white and blue crystals of topaz are large,often weighing thousands of carats.For this reason,the value of topaz does not depend so much on its size as it does with diamonds and many other precious stones,where the value increases about four times with each doubling of weight.The value of a topaz is largely determined by its quality.But color is also important:blue topaz,for instance,is often irradiated to deepen and improve its color.Blue topaz is often sold as aquamarine and a variety of brown quartz is widely sold as topaz.The quartz is much less brilliant and more plentiful than true topaz.Most of it is a variety of amethyst:that heat has turned brown.

Answer 1

黄玉是一种坚硬,透明矿物.它是铝,硅,氟的化合物.宝石级黄玉很有价值.珠宝商把它称为“贵重的黄玉”.最出名级宝石黄玉的颜色范围从深黄色到淡棕色或粉红色.黄玉是最坚硬的宝石矿物之一.在矿石硬度表上,它的硬度为8,这表明刀子刻不动,它能划刻石英.金黄色的黄玉品种是非常少见的.世界上大多数的黄玉是白色或蓝色的.白色和蓝色的黄玉晶体较大,经常有数千克拉重.鉴于这个原因,水晶的价值并不像钻石和其他宝石那样取决于其大小,即：钻石和其他宝石重量翻一番时价值增加约四倍.黄玉的价值很大程度上取决于它的质量,其颜色也很重要：以蓝黄玉为例,照射后颜色通常加深并改善颜色.蓝色黄玉往往作为海蓝宝石出售,而各种棕色石英被广泛作为黄玉出售.石英远没有真的黄玉那么闪耀灿烂,数量也比真正黄玉丰富.大多数是假紫水晶的变体,通过加热转变成棕色.
应该比较专业,请参考.